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Re: Here's the operating manual
David, I am updating the paper on sbitx. I will have it out soon.? - f On Fri, Jul 8, 2022, 8:23 PM David Forrest <drf5na@...> wrote: It might be nice to flesh out the page 2 text "The technical details of how the radio works are covered elsewhere on and my blog ." to point to the talk the doc and a couple specific threads here. |
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Re: Here's the operating manual
It might be nice to flesh out the page 2 text "The technical details of how the radio works are covered elsewhere on hfsignals.com and my blog ." to point to the talk the doc and a couple specific threads here.
Maybe these threads would be good: /g/BITX20/topic/92208839 for the manual editing, /g/BITX20/topic/92079980 for the manual, /g/BITX20/topic/82011726 for the thread on the talk, /g/BITX20/topic/sbitx/83191173 for oz9ny?Niels thread on hacking up a sbitx. |
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Re: Sbitx manual
On Tue, Jul 5, 2022 at 07:46 PM, Ashhar Farhan wrote:
you can order a wm8731 card for 20 dollarsAre you using the Mikroe-506 board?? It looks like the genuine ones are out of stock at all US distributors and shipping from Mikroe costs almost as much as the board itself.? I don't mean to detract from what looks like a great project, just sharing what I found. ? -- |
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Re: Here's the operating manual
Buddy, There is one heavy lift change needed for it be blind friendly - The audio subsystem needs to move from alsa to something like portaudio so we could play the screen text read out over and above the audio signals. - f On Fri, Jul 8, 2022, 6:08 AM Buddy Brannan <buddy@...> wrote: Hi, |
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Re: Here's the operating manual
Hi,
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This is outstanding! I can see that there should be a lot of interest in the blind hams community around this. I¡¯m definitely not radio poor myself, I¡¯ve got a couple of them, but I¡¯m absolutely interested. I¡¯m thinking a pretty low-cost, modest station consisting of a SBitX with one of the N7DBC designed automatic antenna tuners would be a nice station. Exciting stuff. I¡¯m in. -- Buddy Brannan, KB5ELV - Erie, PA Email: buddy@... Mobile: (814) 431-0962 On Jul 7, 2022, at 8:08 PM, Ashhar Farhan <farhanbox@...> wrote: |
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Re: Here's the operating manual
Buddy, I have tried making the radio eyes free to the extent that I can do everything from the keyboard, except to read back the settings. That will happen soon enough.? The commands code is right now a big pot of entangled top ramen noodles (ie along if-then-else switch). Once we go gold on the sbitx v1, I will refactor the code to make it more readable.? We will also have to add scripting feature to this. My idea is that one should be able to telnet to the radio and use the digital modes. - f On Thu, Jul 7, 2022, 11:41 PM Buddy Brannan <buddy@...> wrote: So I¡¯ve started reading the manual, and this looks very exciting. For one thing, the possibility of rolling an eyes-free interface, with already available TTS or morse readout, is pretty exciting. Since everything can be controlled with a keyboard (numeric keypad maybe?) and mouse (ick¡I¡¯ll forego that!), and it¡¯s all GNU/Linux underneath, well, that lends itself to a lot of possibilities. So, glad to see this is getting closer. When I first saw the $500 projected cost, I was a little hesitant, thinking¡oh¡for an HF only QRP radio, that might be a bit more than I want to spend, but¡am I reading this correctly? 50 watts? If so, I can see this as definitely more attractive for more people. 50 watts isn¡¯t far off the usual 100 watts for all practical purposes anyway. |
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Re: uBITX Operator awards KO4CVU and others
I have since discovered that the original post,?/g/BITX20/message/46616?was made by Howard, himself. I first became aware of the modification when my uBITX mentor, Bob, WB8BEL, wrote to me about it and referred me to an article posted at ?
-- Stephen, KO4CVU |
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Re: uBITX Operator awards KO4CVU and others
Howard¡¯s modification involves adding 3 passive parts: ? 33 uH inductor in series with R86. I lifted the resistor mounting it on one pad standing up, and teepeeing the inductor between the top of the resistor and the other pad. ? Adding a 270 pF capacitor across both R87 and R88. Collectively, the uBITX community owes Howard, WB2VXW, thanks for developing this modification to even up power output across the bands. This information was originally posted somewhere on the BITX20 group but I copied it and saved it locally. I am also thankful to whomever posted it. On Thu, Jul 7, 2022 at 4:03 PM Max via <kg4pid=[email protected]> wrote:
Stephen C. Martin, KO4CVU (629) 867-7260 Please remember: Hands, Face, Space and Ventilate! --
Stephen, KO4CVU |
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Re: uBITX Operator awards KO4CVU and others
Could you please tell me what??"Howard's modification" is? Max KG4PID
On Wednesday, July 6, 2022, 01:58:00 PM CDT, Stephen KO4CVU <goinfishin1952@...> wrote:
Ashhar, You are being too kind. I am using Fldigi version 4.1.23 running in Raspbian on a Raspberry Pi 3B. The Pi is the microprocessor part of the Nexus DR-X crosspatch that Budd Churchward, WB7FHC, kits and sells on his webpage at?. The package of software for it is maintained by Steve Magnuson,?AG7GN.? And by the way, based on my own personal experience, I have come to the conclusion that "Howard's modification" made it possible to run digital on my version 6. I say that because I recently bought a second, but unmodified, v6. I tried to use my Nexus DR-X crosspatch with it but the output power was only about 1/10 watt. After completing "Howard's modification", I can get about 4 watts out on 20 meters and 40 meters. I had already completed "Howard's modification" on my first v6 before trying to go digital with it. That first unit will deliver 5 watts on 20 meters and about 10 watts on 40 meters. I am not smart enough to know why "Howard's modification" seems to enable the digital connection to work, I just lucked into the discovery. I also do not understand why the second v6 won't give me more power out on 40 watts, but QRP digital at 5 watts or less is my niche, so I am happy. My most recent power measurements have been with the Barb-A-Watt QRP HF Power / SWR monitor kitted and sold by Kees Talen, K5BCQ. Thanks again for the kind words. If it wasn't for you and your uBITX, I wouldn't be enjoying the ham radio hobby today. Please keep up the great creative work! |
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Re: uBITX 13 Colonies Clean Sweep!
Mike - The uBITX I run digital on has AGC mod (which is turned off for digital), 2.8" Nextion display, and the KD8CEC firmware.? The radio hooks up to an inverted vee by way of a QRP modded ATU100 tuner.? On the computer side I am running wsjtx software and connect the radio to computer with USB cable and a sound card dongle to attach to mic and headphone jacks on the radio.
73, Justin B. KI5GKD |
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Re: Here's the operating manual
So I¡¯ve started reading the manual, and this looks very exciting. For one thing, the possibility of rolling an eyes-free interface, with already available TTS or morse readout, is pretty exciting. Since everything can be controlled with a keyboard (numeric keypad maybe?) and mouse (ick¡I¡¯ll forego that!), and it¡¯s all GNU/Linux underneath, well, that lends itself to a lot of possibilities. So, glad to see this is getting closer. When I first saw the $500 projected cost, I was a little hesitant, thinking¡oh¡for an HF only QRP radio, that might be a bit more than I want to spend, but¡am I reading this correctly? 50 watts? If so, I can see this as definitely more attractive for more people. 50 watts isn¡¯t far off the usual 100 watts for all practical purposes anyway.
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Exciting stuff! -- Buddy Brannan, KB5ELV - Erie, PA Email: buddy@... Mobile: (814) 431-0962 On Jul 7, 2022, at 12:47 PM, Ashhar Farhan <farhanbox@...> wrote: |
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Re: uBITX 13 Colonies Clean Sweep!
That's super, Tom!? I think all I am lacking for 50 states QRP is Hawaii.? Just got Alaska the other day so pretty sure HI is it.? I have 3 V6 models - one I dedicate to digital, another is main radio with built in ATU, and just picked up a third from a member here that is bone-stock at the moment.? It ordered a Nextion so I can run Ian's firmware.
73, Justin B. KI5GKD |
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Re: Here's the operating manual
I see no point in using an eprom. Rpi is a computer running linux. We just open and write to a file on the sd card. On Thu, Jul 7, 2022, 10:07 PM Doug W <dougwilner@...> wrote: I have not tried it myself but I have read of others using an AT24C256 chip to add eeprom.? There is even an I2C module if you don't want to roll your own |
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Re: Here's the operating manual
Jack, W8TEE
Neither does the Teensy, but they emulate it. No such thing on the RP? Jack, W8TEE
On Thursday, July 7, 2022 at 11:49:23 AM EDT, Niels Jalling <niels@...> wrote:
RPI does not have an EEPROM. OS and userdats is stored on the boot-device (SD-card in most setups). 73 de oz9ny, Niels -- Jack, W8TEE |
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Re: Here's the operating manual
Jack, W8TEE
Farhan: Bear in mind that I've not played with the RP much, but why not add a button that reads a default setup from EEPROM?? Jack, W8TEE
On Thursday, July 7, 2022 at 11:28:12 AM EDT, Ashhar Farhan <farhanbox@...> wrote:
I think it should be renamed default_settings.ini So if it gets garbled, you can copy it back. Frequently, I have changed settings (like turning on the rit) and wondered why the radio was misbehaving. Copying back the default would set things back to normal. - f On Thu, Jul 7, 2022, 7:49 PM Niels Jalling <niels@...> wrote: Hi Ashar --
Jack, W8TEE |
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Re: Here's the operating manual
I think it should be renamed default_settings.ini So if it gets garbled, you can copy it back. Frequently, I have changed settings (like turning on the rit) and wondered why the radio was misbehaving. Copying back the default would set things back to normal. - f On Thu, Jul 7, 2022, 7:49 PM Niels Jalling <niels@...> wrote: Hi Ashar |
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